While not currently free, the Epic Games Store regularly gives away high-profile titles for free every week. It is worth monitoring their "Free Games" section for future rotations. Avoiding Pirated Versions
Pirated versions typically lack access to the official Xbox Live servers required for the game’s cooperative multiplayer features. Where to Buy Legally (Best Deals) state-of-decay-pc-game-free-download-full-version
Often features the series in survival-themed game bundles at a fraction of the retail price. Download A Free PC Game Every Week - Epic Games Store While not currently free, the Epic Games Store
Offers the "Play Anywhere" feature, meaning if you buy it on PC, you also own it on Xbox consoles. While not currently free
These downloads frequently bundle malware or spyware.